def test_image_arry_units(self):
im_arr = ImageArray(dummy_image(0.3, 3), input_units='cm')
assert str(im_arr.units) == 'cm'
new_im = im_arr.in_units('km')
assert str(new_im.units) == 'km'
def test_image_arry_units(self):
im_arr = ImageArray(dummy_image(0.3, 3), units="cm")
assert str(im_arr.units) == "cm"
new_im = im_arr.in_units("km")
assert str(new_im.units) == "km"
